physical education. n. (Education) training and practice in sports, gymnastics, etc, as in schools and colleges. Abbreviation: PE. physâ²ical educaâ²tion. n. instruction in sports, exercise, and hygiene, esp. as part of a school or college program.
3. Stress/injury. Stress on the tissues or any type of injury in the mouth can cause canker sores. Since the sores are actually tiny ulcers, they can be caused by any kind of hard brushing or eating something that can cause bruises or lead to tissue inflammation in the mouth.
This occur with blister on gums and can be the result of inflammatory conditions such as gingivitis or periodontitis. Gingivitis occurs when plague buildup on the teeth causes much bacteria to form. The body responds by trying to fight off bacteria, causing gum swelling and inflammation.